A new service allows users to sell old phones and tablets but, as LIRON SEGEV reports, deleting information before selling a device does not wipe your slate clean
Every phone and tablet has an option under Settings that allows you to Reset Phone to Factory Defaults. When activating this option the phone warns you that it will delete all your information, pics, music, e-mail, apps and everything else that you have loaded on the device. Essentially the phone is reset to the point where it came out of the factory and ready to be setup for the first time.
But is this good enough ? Is your information really deleted?
The shocking answer is: NO.
What happens when you delete ?
When we create a file, such as when we snap a new pic or create a new document, the operating system creates the file by storing it in bits and pieces in blocks on the device’s storage – be it internal phone storage or SD Card. It look similar to this:
In order to find which blocks make up the file, the operating system creates an index which identifies the bits that make up the complete file.
When you delete a file, the operating system removes not the content inside the blocks, but removes the reference to those blocks from the Index. However all the bits in the blocks still remain on the hard drive and are marked as “free” so that new files can overwrite those bits. It’s the equivalent of removing the chapter name from the Index of the book, but still leaving the contents of the chapter inside the book – if you page through, you will find that chapter even without the index.
And this is where the problem arrises.
There are applications that allow techies to skip over the index and view the bits inside those blocks so they can recover any file whose blocks haven’t been overwritten by new files.
Does Factory Reset leaves content behind?
This is confirmed by the team at security firm Avast, who purchased 20 phones on eBay and ran their software though them that have been reset to Factory Defaults. They discovered over 40,000 photos (yes, including those sexting pics), 750 e-mails, 250 contacts with names and addresses and various personal files.
Stefan Tanase, Senior Security Researcher, Global Research & Analysis Team, Eastern Europe, Middle East and Africa, Kaspersky Lab confirms this too:
“A staggering amount of personal data is usually left on devices after a factory reset is performed. Most often these devices end up being sold on eBay(-like) websites, and might end up in the hands of someone with bad intentions, who can recover the data. Users don’t realise that they leave behind e-mails or SMS messages, contact information or even personal pictures and videos shot with the phone camera. Essentially, all data stored on the device is recoverable to some extent”
How do you do you ensure that your data is actually deleted ?
Simply doing a factory reset clearly is not the answer. If you want to ensure that none of your sensitive pics or information land up all over the Internet, you should Encrypt your device before doing Factory Reset
This sounds very “James-Bondy” but it s a simple step that you need to do with the tool included with your phone. When you run the encryption tool, it protects your files from prying eyes which goes a long way to stop anyone with $50 software from getting a hold of your family pics.
Each phone manufacturer has their own way of dealing with encryption:
Obviously before engaging in this, make sure you read and understand what is involved and back up your phone (do not lose the PIN either.)
- Android – http://www.networkworld.com/article/2689371/opensource-subnet/how-to-encrypt-an-android-device-in-5-steps.html
- iOS 8 (already comes encrypted) – https://www.apple.com/privacy/privacy-built-in/
- BlackBerry devices: http://docs.blackberry.com/en/smartphone_users/deliverables/47561/als1342444399047.jsp
If your device doesn’t have encryption built into the settings, then you can download several applications from the App Stores that allow you to do that.
The obvious solution would be for the mobile phone manufacturers to have encryption built into their Factory Reset process, however as Stefan Tanase points out that the mobile phone manufacturers chose not to do this because of:
1. Lack of security awareness – both users and manufacturers generally don’t realise the importance of securely erasing data.
2. Speed – erasing a storage device securely takes more time, and the reality is that most users would rather have their device quickly perform the factory reset.
The more we trust our mobile phones with out lives, the more we should be weary of just how vulnerable these devices are. We need to be more aware of the digital fingerprints we are leaving behind.
* Image courtesy of shutterstock.com
* Follow Gadget on Twitter on @GadgetZA
Online retail gets real
After decades of experience in selling online, retailers still seek out the secret of reaching the digital consumer, writes ARTHUR GOLDSTUCK.
It’s been 23 years since the first pizza and the first bunch of flowers was sold online. One would think, after all this time, that retailers would know exactly what works, and exactly how the digital consumer thinks.
Yet, in shopping-mad South Africa, only 4% of adults regularly shop online. One could blame high data costs, low levels of tech-savviness, or lack of trust. However, that doesn’t explain why a population where more than a quarter of people have a debit or credit card and almost 40% of people use the Internet is staying away.
The new Online Retail in South Africa 2019 study, conducted by World Wide Worx with the support of Visa and Platinum Seed, reveals that growth is in fact healthy, but is still coming off a low base. This year, the total sale of retail products online is expected to pass the R14-billion mark, making up 1.4% of total retail.
This figure represents 25% growth over 2017, and comes after the same rate of growth was seen in 2017. At this rate, it is clear that online retail is going mainstream, driven by aggressive marketing, and new shopping channels like mobile shopping.
But it is equally clear that not all retailers are getting it right. According to the study, the unwillingness of business to reinvest revenue in developing their online presence is one of the main barriers to long-term success. Only one in five companies surveyed invested more than 20% of their online turnover back into their online store. Over half invested less than 10% back.
On the surface, the industry looks healthy, as a surprisingly high 71% of online retailers surveyed say they are profitable. But this brings to mind the early days of Amazon.com, in 1996, when founder Jeff Bezos was asked when it would become profitable.
He declared that it would not be profitable for at least another five years. And if it did, he said, it would be in big trouble. He meant that it was so important for long-term sustainability that Amazon reinvest all its revenues in customer systems, that it could not afford to look for short-term profits.
According to the South African study, the single most critical factor in the success of online retail activities is customer service. A vast majority, 98% of respondents, regarded it as important. This positions customer service as the very heart of online retail. For Amazon, investment back into systems that would streamline customer service became the key to the world’s digital wallets.
In South Africa online still make up a small proportion of overall retail, but for the first time we see the promise of a broader range of businesses in terms of category, size, turnover and employee numbers. This is a sign that our local market is beginning to mature.
Clothing and apparel is the fastest growing sector, but is also the sector with the highest turnover of businesses. It illustrates the dangers of a low barrier to entry: the survival rate of online stores in this sector is probably directly opposite to the ease of setting up an online apparel store.
A fast-growing category that was fairly low on the agenda in the past, alcohol, tobacco and vaping, has benefited from the increased online supply of vapes, juices and accessories. It also suggests that smoking bans, and the change in the legal status of marijuana during the survey, may have boosted demand.
In the coming weeks, we can expect online retail to fall under the spotlight as never before. Black Friday, a shopping tradition imported “wholesale” from the United States, is expected to become the biggest online shopping day of the year in South Africa, as it is in the USA.
Initially, it was just a gimmick in South Africa, attempting to cash in on what was a purely American tradition of insane sales on the Friday after Thanksgiving Day, which occurs on the third Thursday of November every year. It is followed by Cyber Monday, making the entire weekend one of major promotions and great bargains.
It has grown every year in South Africa since its first introduction about six years ago, and last year it broke into the mainstream, with numerous high profile retailers embracing it, and many consumers experiencing it for the first time.
It is now positioned as the prime bargain day of the year for consumers, and many wait in anticipation for it, as they do in the USA. Along with Cyber Monday, it provides an excuse for retailers to go all out in their marketing, and for consumers to storm the display shelves or web pages. South African shoppers, clearly, are easily enticed by bargains.
Word of mouth around Black Friday has also grown massively in the past two years, driven by both media and shoppers who have found ridiculous bargains. As news spreads that the most ridiculous of the bargains are to be had online, even those who were reticent of digital shopping will be tempted to convert.
The Online Retail in SA 2019 report has shown over the years that, as people become more experienced in using the Internet, their propensity to shop online increases. This is part of the World Wide Worx model known as the Digital Participation Curve. The key missing factor in the Curve is that most retailers do not know how to convert that propensity into actual online shopping behaviour. Black Friday will be one of the keys to conversion.
Carry on reading to find out about the online retailers of the year.
Reliable satellite Internet?
MzansiSat, a satellite-Internet business, aims to beam Internet connections to places in South Africa which don’t have access to cabled and mobile network infrastructure, writes BRYAN TURNER.
Stellenbosch-based MzansiSat promises to provide cheap wholesale Internet to Internet Service Providers for as little as R25 per Gigabyte. Providers who offer more expensive Internet services could benefit greatly from partnering with MzansiSat, says the company.
“Using MzansiSat, we hope that we can carry over cost-savings benefits to the consumer,” says Victor Stephanopoli, MzansiSat chief operating officer.
The company, which has been spun off from StellSat, has been looking to increase its investor portfolio while it waits for spectrum approval. The additional investment will allow MzansiSat’s satellite to operate in more regions across Africa.
The MzansiSat satellite is being built by Thales Alenia Space, a French company which is also acting as technical partner to MzansiSat. In addition to building the satellite, Thales Alenia Space will also be assisting MzansiSat in coordinating the launch. The company intends to launch the satellite into the 56°E orbital slot in a geostationary orbit, which enables communication almost anywhere in Africa. The launch is expected to happen in 2022.
The satellite will have 76 transponders, 48 of which will be Ku-band and 28 C-band. Ku-band is all about high-speed performance, while C-band deals with weather-resistance. The design intention is for customers of MzansiSat to choose between very cheap, reliable data and very fast, power-efficient data.
C-band is an older technology, which makes bandwidth cheaper and almost never affected by rain but requires bigger dishes and slower bandwidth compared to Ku-band connections. On the other hand, Ku-band is faster, experiences less microwave interference, and requires less power to run – but is less reliable with bad weather conditions.
MzansiSat’s potential military applications are significant, due to the nature of the military being mobile and possibly in remote areas without connectivity. Connectivity everywhere would be potentially be life-saving.
Consumers in remote areas will benefit, even though satellite is higher in latency than fibre and LTE connections. While this level of latency is high (a fifth of a second in theory), satellite connections are still adequate for browsing the Internet and watching online content.
The Internet of Things (IoT) may see the benefits of satellite Internet before consumers do. The applications of IoT in agriculture are vast, from hydration sensors to soil nutrient testers, and can be realised with an Internet connection which is available in a remote area.
Stephanopoli says that e-learning in remote areas can also benefit from MzansiSat’s presence, as many school resources are becoming readily available online.
“Through our network, the learning experience can be beamed into classrooms across the country to substitute or complement local resources within the South African schooling system.”